Finding the Fourth Proportional to 74,369.40, 102,636.90 and 42,532.08
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Solution
The fourth proportional to 74,369.40, 102,636.90 and 42,532.08 is: 58,698.35
Step by Step Solution
- Step 1: Write the proportion equation
74,369.40 : 102,636.90 = 42,532.08 : x - Step 2: Convert to fraction form
74,369.40/102,636.90 = 42,532.08/x - Step 3: Cross multiply
74,369.40x = 102,636.90 × 42,532.08 - Step 4: Simplify right side
74,369.40x = 4,365,360,841.75 - Step 5: Solve for x
x = 4,365,360,841.75/74,369.40 - Step 6: Final answer
x = 58,698.35
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.